So I just found out that 3 years ago when me and my gf broke up (for about a month) she was considering getting back with her baby daddy. She then found out that she was pregnant with my son at the time and also found out that he had gotten another girl pregnant. So she cut things with him and decided to work things out with me.

How should we go about splitting the tax return ? My 1 year old son, girlfriend and her son has been living together and I have paid majority of the household expenses. I pay $1200 in rent and she pays about $300 or less for utilities  . Plus I providing a lot of the expenses for our children .I made over 3x as much as her (she made less than 20k)  and she's filing both kids (I had the option but I denied because of school loans ) . So should I ask for half since I pay majority or let her keep most of it since she makes less?? I want to be fair not greedy . 

My baby mama and I are raising two boys my son which is 8months old and her son who is soon to be 6. We live together and much of her support comes from me . I pay more than double of what she’s paying every month and I’m struggling and she is too (work, school,) . She can’t afford to live on her own and I can’t afford to move somewhere else pay rent there and still give her money to afford to live. BUT I AM TIRED! I am tired of putting up with her hard headed, undisciplined and disrespectful son. He doesn’t listen and she’s does the bare minimum to make him.